Get-AZCopyGUI.ps1 is a GUI wrapper for the Microsoft Azure AZCopy tool (AZCopy.exe) to simplify the process of importing .PSTs into Exchange Online. To use the script, you need to locate your storage account key and upload URL. You can do this by accessing the “Import” menu item in the Office 365 Admin Center. To access this option, you need to be assigned the Mailbox Import Export role in Exchange Online.